Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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The output characteristics of pulsed Nd:YAG laser using Zero Crossing method

Zero Crossing 방식을 이용한 펄스형 Nd:YAG 레이저의 출력 특성

  • Hong, J.H. (Dept. of Electrical Eng. Pusan national Univ.) ;
  • Moon, D.S. (Dept. of Electrical Eng. Pusan national Univ.) ;
  • Noh, K.K. (Dept. of Electrical Eng. Pusan national Univ.) ;
  • Kim, W.Y (Dept. of I.C.C. Dong-Ju college) ;
  • Kang, Uk (KERI) ;
  • Kim, H.J. (Dept. of Electrical Eng. Pusan national Univ.) ;
  • Cho, J.S. (Dept. of Electrical Eng. Pusan national Univ.)
  • 홍정환 (부산대학교 전기공학과) ;
  • 문동성 (부산대학교 전기공학과) ;
  • 노기경 (부산대학교 전기공학과) ;
  • 김휘영 (동주대학 컴퓨터정보통신학과) ;
  • 강욱 (한국전기연구소) ;
  • 김희제 (부산대학교 전기공학과) ;
  • 조정수 (부산대학교 전기공학과)
  • Published : 2000.07.17
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Abstract

For general laser power supply. output of the secondary of the power transformer is connected to the rectifier and filter capacitor. The output of a rectifier is applied to a switching element in the secondary of the transformer. So, power supply is complicated and the loss of switching is considerably. In addition, according to increasing pulse repetition. charged energy of energy storage capacitor is not transferred sufficiently to flashlamp. and laser output efficiency decreases. In this paper, to improve laser efficiency. we designed and fabricated the power supply in which the SCR was turned on in zero point by the method of ZCC(zero crossing control)in result, laser output efficiency in creased by about 3.5% other than conventional supply. when a repetition rate was increased by 10[pps]. In 60[pps]. efficiency was about 20%.

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